Oxyacetylene or like blowpipe



E. ROYER OXYACETYLEE 0R LIKE BLOWPIPE oct. 13, 1925.

Filed Sept. 18'. 1923 2 Sheets-Sheet 2 Patented oci. 13, 1925.

` UNITED sTATEs 1,556,880 PATENT OFFICE.

EUGNE ROYER, F LYON, FRANCE, ASSJQGNOR TO SOCIETE ANONYME DES CHALU- MEAUX E. ROYER, OF LYON, FRANCE.

OXYACETYLENE OR LIKE BLOWPIPE.

Application filed September 18, 1923. Serial No. 663,400.

To all 'whom 'it may concern: Be it known that I, EUGNE ROYER, a citizen of the French Republic, residing at Lyon, France, have invented certain new and useful Improvements in Oxyacetylene or like Blowpipes, of which the following is a specification.

The blow-pipe which forms the subject of the present invention is particularly intended for work under water at any accessible depth to effect cutting of any metal sheets or members of various thicknesses and shapes. It is notably applicable for work on Sunken ships and for similar operations.

A practical form ot construction of the invention is illustrated in the accompanying drawing:

Fig. 1 is a longitudinal axial section of the device.

Fig. 2 is anend view of the fore-end thereof to which are connected the pipes for the supply of the gases necessary for working the apparatus.

The apparatusis composed of a'particular combination of elements of which one part is placed inside a hollow member a forming the head of the apparatus and which is arranged perpendicularly to one of the ends of a long cylindrical tube 6 forming the handle of the apparatus. The opposite end of this handle carries the other elements of the apparatus and comprises a disc 1 provided with conduits for the distribution of the gases, which conduits communicae with three taps, p, q, r, to which are fitted the pipes supplying these gases which pipes are not illustrated in the drawglhe tubular member or head a is formed,

4 for instance by the expansion and beating out of one of the ends of the tube 6 forming the handle of the blow-pipe. This head a. is open at one end and closed at the other as at a1 the end a being provided at the centre with a hole intended to accommodate the threaded end b* of anozzle b vwhich is situated on the axis of the head a. This`nozzle is ke t xed to the head a at the desired height, the tightening of two nuts 7,

'50 which are locked in contrary directions against the end a1.

The threaded end b* of the said nozzle b is hollowed inside to form a cylindrical chamber b1 of which the upper part is tapped to receive the threaded portion lg.

ot a rod h1 the lower conical end k of which forms a needle-valve adapted to bear on a seat lw provided at the lower part of the chamber b1. Through a channel c1 this chamber communicates with a pipee supplying` pure oxygen. .Further a tube n starts from said chamber b1 and runs along outside the nozzle b to the conical end i of said nozzle. In the lower part of the nozzle b are two cylindrical chambers b and 6111,communicating by an orifice of smaller diameter which is screw-threaded to receive a nozzle tube ,(7. This tube extends through the whole length of the chamber b and its end provided with a calibrated orifice leads into the entrance of an axial channel in a nozzle z' which is screwed onto the lower extremit of the jet b.

A pipe d leads into the chamber bm and a pipe f leads into the upper vpart of the chamber L11.

The lower part of the head a is laterally f provided with a screw threaded hole carrying a member 9 which is axially bored so as to serve as a guide to a slidable tappet c which carries an axial rod. k1 the enclosed end ot which is connected to an electric conducting wire Z. The opposite end of this rod la passes through a plug y and projects inside the head a. The tappet Ic is constantly .pushed back by a spring .e which bears against the fixed plug y.

Opposite the projecting end of the conductor rod ist is the end c1 of the pipe c. To this end c1 which is cut obliquely is connected a second current conductor wire which is not shown in the drawing. f

The open end of the head a is extended by i a conical choke-tube j so mounted that it can be raised or lowered and rendered stationary at a desired height, according as the work requires the mouth of this choke-tube to be level with t-he end of the nozzle i of the jet 7 or above or below same. The mounting allowing this adjustment of the tube j'is not illustrated.

The` aforesaid pipes e, d, f, c, are parallel with eachother and with" the sleeve 6 inside which they are housed, these pipes start from within the disc 1 which is secured to the fore-end of the sleeve 6 by a tongue 11L or by any other means.'

This disc 1 is provided with five radiating channels 2, 2", 2b, 2, 2", which are each t throttled at one point of their length in the channel 2, which pipe also runs alon the compressed air.

- acetylene mixture sleeve 6 and leads into the interior o the head a, Fig. 1.

The channel 2 is put by means of a tap g into communication with a pipe supplying The channels 2, 2b communicate with each other through a transverse channel -10 on which is soldered a ta 1' to which a pipe supplying pure oxygen is connected. The channels 2, 2d communicate in the same manner by a chan-nel 11 into which acetylene gas is fed regulated by the valve p.

The taps p, g, 1' serve for initial regulation of the supply of the respective fluids and the needle-valves w, fv, w, s, t, are intended for further regulation of the supply into the pipes m, e, d, f, c. The supply of pure oxygen into the chamber b1 and finally to the jet n is regulated a third time and finally by the needle valve h, h1. l The working of the apparatus is as folowsz- In theirst glace the compressed air tap q and the nee le valve 3 are open at the immersion of the apparatus while the taps p, 'r remain shut, it follows that during the conveyance of the apparatus through the water and during the `whole period of working under water, the compressed air continually arrives inside the head a and passes out through the choke-tube j thus preventing the entrance of any water into the head a and removing the water from any contact with the metal during the cutting operation as known.

In the second place, the diver who manipulates the pipe opens the taps, p, 1 and then operates t e needle-valves s, t, lv, a: to effectuate an initial regulation of the supply of the iuids in the pipes e, d, f, c. Then e forces in the tappet 1c so that its rod k1 enters into contact with the end cl of the tube c and closes the electric circuit. This tappet is then suddenly let go in order to produce a spark which ignites the acetylene gas issuin from the`- ipe c. The Haine which resu ts therefrom Ilengthens'under the action of the compressed air (passing into the head a and this lengthene flame produces in its turn the ignition of the oxg'- issuing through` t e nozzle z. Y

According to the thi ess and nature .of the metal to be out, the pectlve mtensities of the central ame and of the lateral cutting jet are regulated by the o erator by actuating the inlet valves of the iiiids to the re uired extent.

e height of the choke-tube y' is regullated according to the cutting work to be one.

The blow-pipe is moved by the operator inl its plane and parallel with its longitudinal axis in the direction of the arrow in Fig. 1, so that the metal may bev first attacked by the flame from the combustion of the mixture issuing at i and then by the jet of pure oxygen from the pipe fn.

The arrangements of `the constituent elements of the pipe, their dimensions and shapes may vary to a considerable degree, without the principle of the invention being altered. The nature ofthe gases or iuids employed as well as the number thereof may also vary and consequently'the number of pipes and distribution and regulation valves for said gases or iiuids.

The blow pipe described can work in the open air but in this case the head a is removed or the supply of compressed air to this head isidispensed with.

The apparatus possesses the following main advantages.

1. The ignition of the gaseous mixture issuing through the nozzle z' is vabsolutely certain, it vcan be effected at will and any number of times, when the pipe is:v immersed lin the water, by the simple manipulation of the tappet k situated inside the head a which causes the formation of sparks igniting the acetylene gas supplied through the burner c1, this flame causing the ignition of the gaseous mixture supplied through the nozzle z'.

2. The gases passing into the compartments b, b1 mingle very near their outlet -a-iid thus produce a highly oxidant iame fusing metal even of great thickness in a very short time.

3. The needle-valve h ensures a complete and exactregulation of the supply of pure oxygen or other fluid feeding the cutting jet 11l situated eccentrically with regard to the nozzle z'.

4. The suitable gases or fluids feeding the ipe arrive in the chambers b1 and o, b1 in proportions and quantities determined by the successive regulations by the taps p, 1' and the needle-valves, s, t, '11, w, forming a handy group mounted on the disc Z forming the fore-end of the apparatus.

5. The 'et b being of regulatable hei lit and the c oke tube j being also adjusta le with respect to the head a allows the variation of the relative positions of said jet b and choke-tube j according to the work to be done.

6. The apparatus` is not cumbersome, is of. ml'nlmum weight and all the regulating nozzle in lsaid head, means for adjusting said I operators hands.

v--members arewithin immediatev reach of the What I claim as my invention and' desire to-secure .by Letters Patent of the United States is l A v 1.4 A multi le gas blow-pipe comprising a tubular member, a'cylindrical fhead open at one end and closedat the other integral withone of the ends of said member and ar ranged at right `angles thereto, 'means for extendingA the length of said cylindrical head a disk at the other end of said member, a

nozzle axially of said head, a secondno'zzle adjacent thereto, meansforconveying gases to said nozzles, athird nozzlearranged in said first nozzle means for. conveying gas l thereto, means for producing an' electric spark at the outlet of said third nozzle and means comprised in said disk for regulating L vthe supply of gases to said nozzles.

2. -A multiple'gas blow-pipe comprisingv a tubular member, a cylindricalhead open at one end andclosed at the other, integral with bne of -theends `of -said member and arranged at .right angles thereto, means for extending thelength of said cylindrical head a disk' at the otherend ofsaidmember, a

nozzle. in said head, means for adjusting saidnozzle axiallyA of saidvhead, a second nozzle adj acent thereto, means -for conveying gases to said nozzles, a third nozzle in said cad, means for conveying gas- .thereto,

' means forp'roducing an electric spark at the outlet'v of said third nozzle,'a lurality of taps connected to -said.disk, a adjustable needle valves, an intermediate needle. valve and a se(`:ondpairv of needle -valves -carrled by said' disk means ,connect-A ing said first pair of. adjustable needle valves to one of -said taps, meansconne'ctin saidv p second pair of needle valves to anot er 'of said taps,l mea-nsv connecting Said v intermediate needle valvelto another-fof said taps, pipes connecting the respective needlevalves rst pair of- 'of said-head.

In witness whereofY AIhave signed this.

of said first mentioned pair to'said concentric and said second nozzle, pipes connect-,m

the respective needle valve of said secon mentioned pair to saidv first nozzle and to said head, and a pipejconn'ecting said intermediate needle valve lto said head.

- 3. A multiple gas blow-pipe comprisingv a tubular member, a tubular head open at one end land closedat` the other, integral with one of the ends of said member and ar- .ran'ged at ri ht angles thereto, a diskl at the other end o saidmember, a nozzle member mounted concentrically in said head and having an upper chamber provided with a valve seat, an intermediate and a lower chamber, a-nozzle passage extending from said lower chamber to the base of saidnozzle member in said head, al valve adapted to be,

moved 'towards or awayl from said valve i passage ofgases through vsaid p1pesa pipe y extending from a chamber in said disk to said head, andy conveying compressed air thereto, a valve in `said dlsk'for regulating the supply of compressed air, an 'electrically conductive .pipe extending from av chamber in said disky to said head, an electrically conductive spring. governed plunger mounted in i'thesidewall of said head, means for con-- veymg f'electric currentztlieretm'and a slidable extension mounted within the open end specication. v1 y EUG'NE ROYER,

member, means for adjusting said nozzle- 

